Categories Downton Abbey I thought caution was a virtue. Post author By quotegeek Post date November 27, 2012 No Comments on I thought caution was a virtue. Mr. Carson: I thought caution was a virtue. Mrs. Hughes: Caution may be; self-interest is not. Tags caution, self-interest ← I’m not sure the world is listening. → Mr. Bates, is this a proposal? Leave a Reply Cancel replyYou must be logged in to post a comment.